Garbage disposal apparatus



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Oct. 27, 1953 Filed March 5, 1951 2 Sheets-Sheet l (w gli? ,rg/f //4 I 'Y UL WM Y/ Y, E 5

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ct. 27, 1953 J. R. BACKLUND ETAL 2,656,985

` GARBAGE DISPOSAL APPARATUS 2 Sheets-Sheet 2 Filed March 5 195] Patented Oct. 27, `1.953

GARBAGE DISPOSAL APPARATUS John R. Backlund and Vernon E. Flanders, Bloomington, Ill., assignors to Eureka Williams Corporation, Bloomington,

of Michigan Ill., a corporation Application March 5, 1951, Serial N0. 213,928

4 anims. l

This invention relates to garbage disposal apparatus and has particular reference to a new and improved means for reducing material supplied thereto and discharging the same into a conventional drain.

The invention consists primarily in the provision of a new and improved shredder ring for a garbage grinder having integral cutting tooth surfaces formed thereon in such a way as to facilitate the reducing of the garbage into particles small enough to permit the same to be discharged through the outlets from the receiving chamber.

A principal object of the invention is to provide a new and improved garbage disposal apparatus.

A further object of the invention is to provide a garbage disposal apparatus having an improved garbage reducing means.

Another object of the invention is to provide an improved form of shredder ring for use in a garbage grinder.

A further object of the invention is to provide a shredder ring for a garbage grinder having a plurality of rows of cutting teeth formed thereon so as to facilitate reduction of the garbage.

Other and further objects of the invention will be apparent from the following description and claims and may be understood by reference to the accompanying drawings, of which there are two sheets, which by way of illustration show a preferred embodiment of the invention and what we now consider to be the best mode in which we have contemplated applying the principles of our invention. Other embodiments of the invention may be used without departing from the scope of the present invention as set forth in the appended claims.

In the drawings:

Fig. 1 is a fragmentary vertical sectional View through a garbage disposal apparatus embodying our invention;

Fig. 2 is a sectional view taken along lines 2--2 of Fig. l;

Fig. 3 is a fragmentary developed View of the shredder ring embodying this invention;

Fig. 4 is a fragmentary sectional view taken along lines 4--4 of Fig. 3; and

Fig. 5 is a fragmentary sectional view taken along lines 5-5 of Fig. 3.

A garbage disposal apparatus of the type contemplated by this invention is particularly adapted for domestic use and is constructed and arranged to be secured to the discharge outlet of a sink. The apparatus consists of a vertically disposed chamber I2 having a shredder ring I 4 arranged at the periphery of the bottom wall of the chamber I2, a power driven rotary means indicated generally at I 6 for reducing material supplied to the chamber I2, and an electric motor I8 for driving the rotary means.

The chamber I2 is generally circular in cross section and may be of larger diameter at the bottom thereof than at the top so as to facilitate passage of material therethrough. A sleeve 20 is threaded into the upper end of the casting which defines the upper part of the chamber I2, and the lip of the sink which surrounds the opening therein is adapted to be conned between the under side of the flange 22 on the sleeve 2U and a resilient ring or gasket 24 arranged in an annular ring 26 which surrounds the sleeve 20. The gasket 24 may be tightened upwardly against the confined portion of the sink by means of bolts 28 which are threaded into circumferentially spaced bosses 30 provided on the casting dening the chamber I2.

A suitable closure (not shown) is adapted to be received within the sleeve 20 and manipulated for selectively permitting the iiow of Water only into the chamber I2, for permitting the iiow of garbage and water into the chamber, or for completely closing the sink outlet. Suitable controls, also not shown, may be provided for controlling the operation of the garbage grinder mechanism and the flow of water into the chamber during operation thereof, and if desired such controls may be actuated by and operated in accordance with the position of the closure.

The shredder ring I4 is arranged at the periphery of the bottom wall 32 of the chamber and forms a continuation of the inner wall of the chamber defined by the upper casting. The shredder ring is provided with an upper row of cutting teeth 34 and a lower row of teeth 35. An annular trough 40 surrounds the shredder ring I4 and reduced material is projected through the openings 38 into the trough 4i), from which it is carried through the discharge outlet 42 which may be connected to a conventional drain.

The power driven rotary means I 6 comprises a central hub 44 having hammers 46 secured thereto and arranged to pivot about an axis parallel to the axis of rotation of the hub 4d. The electric motor I8 has a shaft 48 provided with suitable bearing and sealing means indicated generally at 49 and secured to the hub 44 for rotating the same upon operation of the motor I8.

The hub 44 has two oppositely extending arms 50 and the hammers 46 are pivotally mounted to the arms 50 by means of pins 52. The forward or leading edges of the hammers 46 are provided with vertically extending cutting teeth or serrations 54, and the hammers are also provided with upstanding agitators .56 having notches or lteeth thereon to aid in breaking up .the material to be reduced.

As shown in Fig. 2, the direction of rotation -.Qf the rotary means and the hammers 46 is ina clockwise direction. The centrifugal `force involved by the rotation of the .rotary means .forces the hammers into their extended position shown in Fig. 2. The hammers are maintained in this extended position during operation of the grinder due to centrifugal force .and Aagainst .the forces opposing rotation of the garbage and water contained in the chamber I2. In the event that the hammers encounter large pieces of material which .cannot be immediately ground finto particles .small .enough to be :discharge through .the openings .38, the pivotal connection .of the `hammers will permit them .to rotate about the pins v52 in a counterclockwise direction (Fig. 2)

The shredderring t4, as .shown more clearly in Fig. '3, comprises a .pair of vertically spaced, circumferentially extending rows of cutting teeth. The teeth of the .lower .row are formed .by .deflecting portions of the shredder ring radially 4outwardly, Aand the .edges .6.0 which are thus defined .form the cutting teeth 3.6.. The teeth ,-34 of the .upper row of .teeth are formed by .deecting portions of the shredder ring radially inwardly. vThe discharge .openings 3B .extend upwardly vfrom the bottom wall 32 ofthe chamber 4,2 .and are formed in the outwardly deiiected portions of the .shredder ring which denethe lower row .of teeth. The lower ,portions of the `teeth-36 dene one edge of the openings .38.

As showninFgs. land, the upper extremities of the teeth 36 are .located .substantially .at the tops of the hammers 46 and are curved .downwardly therefrom in the `direction of rotation of the rotary means. During .rotation `the `hammers 46 .sweep past the cutting teeth 36, and .due .to the shape thereof reduced material is forced downwardly along .the teeth and into the -discharge openings 38. The teeth E34 of the upper row of teeth are I.disposed inwardly .of the inner surface ofthe shredderring and are inclinedfrom the upper ends thereof downwardly .in -the-direc tion of rotation of the hammers t6. Material to be reduced .will ibe projected lagainst the teeth .-34 as well as against the teeth -36 -by the hammers d6 and by the upstandingagitators. The teeth .34 aid inbreaking up the material, .and thematerialimpelled thereagainst .is forced downwardly v.along the teethtowardthe teeth 3.6 and .thehammers 46. The lower lends of vthe teeth Y314 `termi- .nate just -above the top of the-hammers.

`During operation vof the grinder :material in .thechamber is .impelledagainst the teeth Stand the teeth 3.6. `The materialconned betweenthe `teeth 3'6 and theends ofthe ham-mers 46 vis reduced'into particles of a sizesmall'enoughto permit their discharge `through the openings 13.8. YThe -teeth 34 provide additional cutting Atooth surfaces which aid'inthe preliminary reducing of .thematerial, and due to the inward disposition andinclination thereof, the material vduring'.rotation ofthe hammers is forced downwardly along .the teethwhere such material is acted .upon .by .the hammers andthe teeth 36 so as to be further .re-

duced and projected through the openings 38 into the discharge outlet 42.

During operation of the grinder water should be supplied to the hopper I2 so as to facilitate reduction of the material and discharge of the material through the outlets. The serrations 54 on the leading :edges ofthe hammers aid in reducing the material and also aid in :preventing movement of the material past the ends of the hammers during rotation thereof.

While wehave illustrated and described a preferred embodiment of our invention, it is understood that this is capable of modification and we therefore do not wish to be limited to the precise .details set forth, but desire to avail ourselves of such changes :and alterations as fall within the purview .of the following claims.

We claim:

il. :..Garibage disposal apparatus comprising a vertically disposed chamber adapted to receive material to be reduced,a.cylindrical shredderring .arranged at the periphery Q :the `bottom wall of .said chamber andextending upwardly therefrom, saidshredder `ring .having `a plurality -of vertically spaced, circumferentially extending rows .of :cutting .teeth formed -thereon and a plurality fO fradially extending openings therein .extending around the bottom .of said `chamber and forming a dis- `chargeroutlet for reduced material, power ydri-ven rotary means at the .bottom-Of @Saidlchamherzahd .adapted 4during rotation thereof .to project material against .said teeth and through ,Sai-.d Open ings, said rotary means comprising a plurality .of radially `:extending hammers arrangedttogsweep vthe bottom wall .ofsaid chamber, at least .one .of said hammers being provided with an upwardly lprojecting agitator adjacent the l outer end-thereof, 4the teeth of Athe lower 'of said rows of :teeth being formed by radiallyiou-twardlydeflected'poltions of .sa-id .sh-redder ring lwith fthe .upper -ex- .tremities `tl'iereof termina-ting Substantially .at the top of said hammers, and the teeth of `.the other .of .said rows of teeth fbeing :formed joy ;radia11y `inwardly'.deflected portions of Isaid.shredder ring with the lower extremities thereof term.matinsV .above-said hammers.

2. Garbage disposal apparatus comprising .a vvertically .disposed chamber :adapted to receive material-to be reduced, a shredder ring .arranged f at the ,periphery of the :bottom -zwall of .said-.cham- Aber .and vextending =.upwardly therefrom, -said .shredder ring .having a plurality Aof vertically spaced, circmnferentially extending rows of .cutting .teeth formed thereon :and a plurality of :radially A.extending openings :therein extending faround :the :bottom `.of :sa-id :chamber and forming fa discharge youtlet for reduced material, power 4driven rotary means at .the bottom of said chamber and adapted during rotation thereof-.to-project material against said teeth fand through-said vopenings,"said ',rotary'mea-nscomprising a plurality of "radially aextending hammers arranged Eto sweep the bottom wall of said chamber,atleast vone ofrsai-d .hammers beingzprovided-:with an Vupwardly projecting agitator adjacent the outereend thereof, the lower .of .fsa-id `rows of teeth being formed tbytradially :outwardly deiiected portions lof fsaid lshredder zring, ythe zteeth .of -said 'lower row curving downwardly :in ithe .direction of rotation :of said `rotary :means and :having itheir upper extremities terminating substantially at .the ftop .of .said hammers, .and the zteeth .of fthe other of .saidrowsof cutting .teeth being disposed-radially .inwardly .of vsaid shredder ring ,with :the .lower extremities.thereof.terminating.abovefandlclosely adjacent the top of said hammers, said lastmentioned teeth being inclined downwardly in the direction of rotation of said rotary means whereby material impelled thereagainst by said hammers and said agitator moves downwardly along said teeth toward said lower row of teeth and said discharge openings.

3. Garbage disposal apparatus comprising a vertically disposed chamber adapted to receive material to be reduced, a cylindrical shredder ring arranged at the periphery of the bottom wall of said chamber and extending upwardly therefrom, said shredder ring having a plurality of circumferential rows of cutting teeth formed thereon and a plurality of radially extending openings therein extending around the bottom of said chamber and forming a discharge outlet for reduced material, power driven rotary means at the bottom of said chamber and adapted during rotation thereof to project material against said teeth and through said openings, said rotary means comprising a plurality of radially extending hammers arranged to sweep the bottom wall of said chamber, the teeth of the lower of said rows of teeth being defined by radially outwardly deflected portions of said shredder ring and extending from the upper extremities thereof downwardly and in the direction of rotation of said rotary means, said discharge openings having an edge thereof defined by portions of the teeth of said lower row, :and the teeth of the other of said rows of cutting teeth being `formed by inwardly deflected portions of said shredder ring, said inwardly disposed teeth having substantially the same vertical height as the teeth of said lower row and having their lower extremities terminating closely adjacent and above said hammers.

4. Garbage disposal apparatus comprising a vertically disposed chamber adapted to receive material to be reduced, :a cylindrical shredder ring arranged at the Iperiphery of the bottom wall of said chamber and extending upwardly therefrom, said shredder ring having upper and lower ycircumferential rows of cutting teeth formed thereon and a plurality of radially eX- tending openings therein adjacent the bottom wall of said chamber and forming a discharge outlet for reduced material, power driven rotary means at the bottom of said chamber and adapted during rotation thereof to project material against said teeth and through said openings, `said rotary means comprising a plurality of radially extending hammers arranged to sweep the bottom wall of said chamber, the teeth of the lower of said rows of teeth being defined by radially outwardly deflected portions of said shredder ring and extending from the bottom wall of said chamber to the top of said hammers, the teeth of the upper row being formed by radially inwardly deflected portions of said shredder ring, and having their lower extremities terminating above and closely adjacent the top of said hammers, the teeth of each row loeing of substantially the same height and each of said rows having substantially the same number of teeth therein, all of said teeth extending from their upper extremities downwardly in the direction of rotation of said rotary means whereby material impelled thereagainst by said rotary means moves downwardly along said teeth toward said discharge openings.

JOHN R. BACKLUND. VERNON E. FLANDER'S.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 978,034 Kinsey Dec. 6, 1910 2,421,014 Coss 1 May 27, 1947 2,482,124 Powers e- Sept. 20, 1949 2,534,944 Bissey Dec. 19, 1950 2,536,929 Hammell Jan. 2, 1951 

